The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1989
Filed:
Feb. 19, 1988
Michael J Cheresnowsky, Towanda, PA (US);
GTE Products Corporation, Stamford, CT (US);
Abstract
A method is disclosed for producing fine cobalt metal powder which comprises adding to a solution of cobaltous chloride, sodium hydroxide in an amount equal to at least the stoichiometric amount required to form a precipitate of the major portion of the cobalt as cobaltous hydroxide and a mother liquor containing the balance of the starting cobalt, separating the precipitate from the mother liquor, water washing the precipitate to remove essentially all of the sodium therefrom, and reducing the precipitate to fine cobalt metal powder having an FSSS of from about 0.5 to about 2.0. Drying of the precipitate before reduction results in the fine cobalt metal powder having essentially no tailings.